How to trust

So basically I'm talking to this new sweet funny very attractive guy and he wants to take me on a first date to the drive in and he has this perfect plan where he makes up a bed in the back of his truck and all this stuff now it sounds wonderful except for the part where I suffer from a severe generalized anxiety disorder and when I was 16 I was sexually assaulted and border line raped in a locked car in a abandoned parking Lot now I can't trust any guy and intimacy scares me so much I start to sob I don't know what to do because I really think I'd like to give this guy a chance